Abstract
Mega thrust earthquakes generated large tsunamis quite often. Based on lessons learned from the 2004 Sumatra and the 2011 East Japan Earthquakes/Tsunamis, we recognized the importance of real time monitoring on the natural hazards. Monitoring systems using multi kinds of sensors such as the accelerometer, broadband seismometer, pressure gauge, difference pressure gauge, hydrophone and thermometer is indispensable not only for mitigation of damage from earthquakes and tsunamis, but also for understanding of broadband crustal activities around mega thrust earthquake seismogenic zones. Therefore, we have developed the Dense Ocean floor Network for Earthquakes and Tsunamis (DONET) to acquire the seafloor data in real time around the Nankai trough seismogenic zone, southwestern Japan. The first phase of deployment (DONET1) was completed and the second phase (DONET2) is being developed at the time of writing of the manuscript. At the 2011 East Japan Earthquake, DONET1 observatories detected offshore tsunamis 15 min earlier than onshore stations. Furthermore, DONET1 and DONET2 will be expected to monitor silent phenomena such as low frequency tremors and slow earthquakes for the estimation of seismic stage which would occur in the inter-seismic or pre-seismic stage. The recurrence cycle of mega thrust earthquakes, modeling of tsunami inundation and seismic response on buildings and cities are also important in the disaster mitigation programs and related measures. Real-time monitoring data should be integrated with the advanced simulations for precise earthquake and/or tsunami early warnings and rapid estimation of the damages.
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References
Baba T, Takahashi N, Kaneda Y (2013) Near-field tsunami amplification factors in the Kii Peninsula, Japan for Dense Oceanfloor Network for Earthquakes and Tsunamis (DONET). Mar Geophys Res. doi:10.1007/s11001-013-9189-1
Baba T, Takahashi N, Kaneda Y, Inazawa Y, Kikkojin M (2014) Tsunami inundation modeling of the 2011 Tohoku earthquake using three-dimensional building data for Sendai, Miyagi Prefecture, Japan. In: Fandiño VS et al (eds) Tsunami events and lessons learned, advances in natural and technological hazards research, vol 35. Springer, Dordrecht, pp 89–98, 10.1007/978-94-007-7269-4_3
Fujiwara T, Kodaira S, No T, Kaiho Y, Takahashi N, Kaneda Y (2011) The 2011 Tohoku-Oki earthquake: displacement reaching the trench axis. Science 334:1240
Ishibashi K (2004) Status of historical seismology in Japan. Ann Geophys 47:339–368
Kaneda Y (2013) DONET research and development group, Integration of Science and Technology for evolutions of Ocean Science and Natural disaster mitigation UT (Underwater Technology) 2013
Kawaguchi K, Kaneda Y, Araki E, Baba T, Takahashi N (2012) Reinforcement of seafloor surveillance infrastructure for earthquake and tsunami monitoring in Western Japan OCEANS’12 MTS/IEEE Yeosu, 2012
Kodaira S, Iidaka T, Kato A, Park JO, Iwasaki T, Kaneda Y (2004) High pore fluid pressure may cause silent slip in the Nankai Trough. Science 304(2004):1295–1298
Kodaira S, Hori T, Ito A, Miura S, Fujie G, Park JO, Baba T, Sakaguchi H, Kaneda Y (2006) A cause of rupture segmentation and synchronization in the Nankai trough revealed by seismic imaging and numerical simulation. J Geophys Res 111, B09301. doi:10.1029/2005JB004030
Kodaira S, No T, Nakamura Y, Fujiwara T, Kaiho Y, Miura S, Takahashi N, Kaneda Y Taira A (2012) Coseismic fault rupture at the trench axis during the 2011 Tohoku-oki earthquake Nature Geoscience, 2012
Maeda T, Furumura T, Sakai S, Shinohara M (2011) Significant tsunami observed at ocean-bottom pressure gauges during the 2011 off the Pacific coast of Tohoku Earthquake. Earth Planets Space 63:803–808
Ohtani M, Hirahara K, Hori T, Hyodo M (2014) Observed change in plate coupling close to the rupture initiation area before the occurrence of the 2011 Tohoku earthquake: Implications from an earthquake cycle model. Geophys Res Lett 41:1899–1906. doi:10.1002/2013GL058751
Park J-O, Tsuru T, Kodaira S, Cummins PR, Kaneda Y (2002) Splay Fault branching along the Nankai subduction zone. Science 297(2002):1157–1160
Peterson E, Seno T (1984) Factors affecting seismic moment release rates in subduction zones. J Geophys Res 89(1984):10233–10248
Satake K, Fujii Y, Harada T, Namegaya Y (2013) Time and space distribution of coseismic slip of the 2011 Tohoku Earthquake as inferred from tsunami waveform data. Bull Seismol Soc Am 103:1473–1492. doi:10.1785/0120120122
Yamamoto Y, Obana K, Takahashi T, Nakanishi A, Kodaira S, Kaneda Y (2013) Imaging of the subducted Kyushu-Palau Ridge in the Hyuga-nada region, western Nankai Trough subduction zone. Tectonophysics 589(2013):90–102
Yamanaka Y, Kikuchi M (2004) Asperity map along the subduction zone in northeastern Japan inferred from regional seismic data. J Geophys Res 109(B07307):2004. doi:10.1029/2003JB002683
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Kaneda, Y. et al. (2015). Advanced Real Time Monitoring System and Simulation Researches for Earthquakes and Tsunamis in Japan. In: Santiago-Fandiño, V., Kontar, Y., Kaneda, Y. (eds) Post-Tsunami Hazard. Advances in Natural and Technological Hazards Research, vol 44. Springer, Cham. https://doi.org/10.1007/978-3-319-10202-3_12
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